Patent

Title of Invention Patent/Practical Model Registration Number Registration Date
Automatic driving support systems Patent No. 6754925 2020/08/27
Road tunnel ventilation controller Patent No. 6754517 2020/08/26
Fast fire detection system and fast fire detection method Patent No. 6598385 2019/10/11
Power supply system for driving jet fans using non-isolation transformer Patent No. 6555594 2019/07/19
Power supply system for driving tunnel fans using improved non-isolation transformer Patent No. 6516170 2019/04/26
Tunnel ventilation control system using jet fans for two-way traffic tunnels Patent No. 6089329 2017/02/17
Traffic detection system Patent No. 6007395 2016/09/23
Road tunnel ventilation controller Patent No. 5558063 2014/06/13
Ventilation control system for long-distance road tunnels Patent No. 5335550 2013/08/09
Variable speed induction motor drive for road tunnel jet fans driven via long cable Patent No. 5300775 2013/06/28
Tunnel ventilation control system using jet fans for two-way traffic tunnels Patent No. 4898732 2012/01/06
Image processor Patent No. 4718250 2011/04/08
Volume data rendering system and volume data rendering processing program Patent No. 4656633 2011/01/07
Air conditioning control system using natural ventilation by normal air Patent No. 4187688 2008/09/19
Dynamic simulator for road tunnel ventilation control and its program Patent No. 4164556 2008/08/08
Information acquisition device for vehicle passing on road Utility model No. 3094435 2003/03/19
Road tunnel fire information provision system Utility model No. 3091131 2002/10/23